▎ 摘　　要

NOVELTY - A perovskite precursor solution comprises perovskite precursors, a salt of a cation heterocyclic molecule with at least one polymerizable unit, and a solvent. USE - Precursor solution used for preparing perovskite film for preparing perovskite solar cell (all claimed). ADVANTAGE - The perovskite precursor solution produces solar cells with long-term stability and increased resistance of the system to water-induced degradation. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of perovskite film, which involves heating the perovskite precursor solution at a temperature of 15-80 degrees C; (2) perovskite film; (3) perovskite solar cell, which comprises transparent conductive layer, perovskite film, an electrode, optionally electron transport layer, hole transport layer, electron-blocking layer and hole-blocking layer; and (4) preparation of perovskite solar cell, which involves (a) preparing a transparent conducting oxide layer, (b) optionally preparing and depositing an electron transport layer, (c) optionally preparing and depositing a hole-blocking layer, (d) preparing and depositing a perovskite layer, (e) optionally preparing and depositing an electron-blocking layer, (f) optionally preparing and depositing a hole transport layer, and (g) preparing and depositing an electrode layer.